+1 here. Clojure 1.6.0-alpha1 doesn't compile ClojureScript with 0.0-1978, but does with 0.0-1934.

I see this exception:

% lein cljsbuild once
Compiling ClojureScript.
Compiling "public/main.js" from ["src-cljs"]...
Compiling "public/main.js" failed.
clojure.lang.ArityException: Wrong number of args (1) passed to: core/instance?
at clojure.lang.AFn.throwArity(AFn.java:436)
at clojure.lang.AFn.invoke(AFn.java:39)
at cljs.analyzer$source_path.invoke(analyzer.clj:1114)
at cljs.analyzer$forms_seq.invoke(analyzer.clj:1122)
at cljs.analyzer$analyze_file.invoke(analyzer.clj:1150)
at cljs.compiler$parse_ns.invoke(compiler.clj:907)
at cljs.compiler$parse_ns.invoke(compiler.clj:903)
at cljs.compiler$to_target_file.invoke(compiler.clj:992)
at cljs.compiler$compile_root.invoke(compiler.clj:1023)
at cljs.closure$compile_dir.invoke(closure.clj:399)
at cljs.closure$eval2504$fn__2505.invoke(closure.clj:431)
at cljs.closure$eval2431$fn__2432$G__2422__2439.invoke(closure.clj:299)
at cljs.closure$eval2491$fn__2492.invoke(closure.clj:445)
at cljs.closure$eval2431$fn__2432$G__2422__2439.invoke(closure.clj:299)
at cljsbuild.compiler.SourcePaths$fn__2698.invoke(compiler.clj:44)
at clojure.core$map$fn__4209.invoke(core.clj:2509)
at clojure.lang.LazySeq.sval(LazySeq.java:42)
at clojure.lang.LazySeq.seq(LazySeq.java:60)
at clojure.lang.RT.seq(RT.java:484)
at clojure.core$seq.invoke(core.clj:133)
at clojure.core$apply.invoke(core.clj:617)
at clojure.core$mapcat.doInvoke(core.clj:2538)
at clojure.lang.RestFn.invoke(RestFn.java:423)
at cljsbuild.compiler.SourcePaths._compile(compiler.clj:44)
at cljs.closure$build.invoke(closure.clj:975)
at cljs.closure$build.invoke(closure.clj:949)
at cljsbuild.compiler$compile_cljs$fn__2709.invoke(compiler.clj:58)
at cljsbuild.compiler$compile_cljs.invoke(compiler.clj:57)
at cljsbuild.compiler$run_compiler.invoke(compiler.clj:156)
at user$eval2835$iter__2838__2842$fn__2843.invoke(form-init9172214651958793811.clj:1)
at clojure.lang.LazySeq.sval(LazySeq.java:42)
at clojure.lang.LazySeq.seq(LazySeq.java:60)
at clojure.lang.RT.seq(RT.java:484)
at clojure.core$seq.invoke(core.clj:133)
at clojure.core$dorun.invoke(core.clj:2807)
at clojure.core$doall.invoke(core.clj:2823)
at user$eval2835.invoke(form-init9172214651958793811.clj:1)
at clojure.lang.Compiler.eval(Compiler.java:6685)
at clojure.lang.Compiler.eval(Compiler.java:6675)
at clojure.lang.Compiler.load(Compiler.java:7130)
at clojure.lang.Compiler.loadFile(Compiler.java:7086)
at clojure.main$load_script.invoke(main.clj:274)
at clojure.main$init_opt.invoke(main.clj:279)
at clojure.main$initialize.invoke(main.clj:307)
at clojure.main$null_opt.invoke(main.clj:342)
at clojure.main$main.doInvoke(main.clj:420)
at clojure.lang.RestFn.invoke(RestFn.java:421)
at clojure.lang.Var.invoke(Var.java:424)
at clojure.lang.AFn.applyToHelper(AFn.java:163)
at clojure.lang.Var.applyTo(Var.java:741)
at clojure.main.main(main.java:37)

% lein cljsbuild once
Compiling ClojureScript.
Compiling "public/main.js" from ["src-cljs"]...
Compiling "public/main.js" failed.
clojure.lang.ArityException: Wrong number of args (1) passed to: core/instance?
at clojure.lang.AFn.throwArity(AFn.java:436)
at clojure.lang.AFn.invoke(AFn.java:39)
at cljs.analyzer$source_path.invoke(analyzer.clj:1114)
at cljs.analyzer$forms_seq.invoke(analyzer.clj:1122)
at cljs.analyzer$analyze_file.invoke(analyzer.clj:1150)
at cljs.compiler$parse_ns.invoke(compiler.clj:907)
at cljs.compiler$parse_ns.invoke(compiler.clj:903)
at cljs.compiler$to_target_file.invoke(compiler.clj:992)
at cljs.compiler$compile_root.invoke(compiler.clj:1023)
at cljs.closure$compile_dir.invoke(closure.clj:399)
at cljs.closure$eval2504$fn__2505.invoke(closure.clj:431)
at cljs.closure$eval2431$fn__2432$G__2422__2439.invoke(closure.clj:299)
at cljs.closure$eval2491$fn__2492.invoke(closure.clj:445)
at cljs.closure$eval2431$fn__2432$G__2422__2439.invoke(closure.clj:299)
at cljsbuild.compiler.SourcePaths$fn__2698.invoke(compiler.clj:44)
at clojure.core$map$fn__4209.invoke(core.clj:2509)
at clojure.lang.LazySeq.sval(LazySeq.java:42)
at clojure.lang.LazySeq.seq(LazySeq.java:60)
at clojure.lang.RT.seq(RT.java:484)
at clojure.core$seq.invoke(core.clj:133)
at clojure.core$apply.invoke(core.clj:617)
at clojure.core$mapcat.doInvoke(core.clj:2538)
at clojure.lang.RestFn.invoke(RestFn.java:423)
at cljsbuild.compiler.SourcePaths._compile(compiler.clj:44)
at cljs.closure$build.invoke(closure.clj:975)
at cljs.closure$build.invoke(closure.clj:949)
at cljsbuild.compiler$compile_cljs$fn__2709.invoke(compiler.clj:58)
at cljsbuild.compiler$compile_cljs.invoke(compiler.clj:57)
at cljsbuild.compiler$run_compiler.invoke(compiler.clj:156)
at user$eval2835$iter__2838__2842$fn__2843.invoke(form-init9172214651958793811.clj:1)
at clojure.lang.LazySeq.sval(LazySeq.java:42)
at clojure.lang.LazySeq.seq(LazySeq.java:60)
at clojure.lang.RT.seq(RT.java:484)
at clojure.core$seq.invoke(core.clj:133)
at clojure.core$dorun.invoke(core.clj:2807)
at clojure.core$doall.invoke(core.clj:2823)
at user$eval2835.invoke(form-init9172214651958793811.clj:1)
at clojure.lang.Compiler.eval(Compiler.java:6685)
at clojure.lang.Compiler.eval(Compiler.java:6675)
at clojure.lang.Compiler.load(Compiler.java:7130)
at clojure.lang.Compiler.loadFile(Compiler.java:7086)
at clojure.main$load_script.invoke(main.clj:274)
at clojure.main$init_opt.invoke(main.clj:279)
at clojure.main$initialize.invoke(main.clj:307)
at clojure.main$null_opt.invoke(main.clj:342)
at clojure.main$main.doInvoke(main.clj:420)
at clojure.lang.RestFn.invoke(RestFn.java:421)
at clojure.lang.Var.invoke(Var.java:424)
at clojure.lang.AFn.applyToHelper(AFn.java:163)
at clojure.lang.Var.applyTo(Var.java:741)
at clojure.main.main(main.java:37)

With the patch, after `lein cljsbuild clean` I started to get the following exception.

% lein cljsbuild auto
Compiling ClojureScript.
Compiling "public/main.js" from ["src-cljs"]...
Compiling "public/main.js" failed.
java.lang.IllegalArgumentException: URI is not hierarchical
at java.io.File.<init>(File.java:392)
at cljs.analyzer$source_path.invoke(analyzer.clj:1193)
at cljs.analyzer$forms_seq.invoke(analyzer.clj:1200)
at cljs.analyzer$analyze_file.invoke(analyzer.clj:1228)
at cljs.compiler$parse_ns.invoke(compiler.clj:904)
at cljs.compiler$parse_ns.invoke(compiler.clj:900)
at cljs.compiler$to_target_file.invoke(compiler.clj:990)
at cljs.compiler$compile_root.invoke(compiler.clj:1021)
at cljs.closure$compile_dir.invoke(closure.clj:399)
at cljs.closure$eval2606$fn__2607.invoke(closure.clj:431)
at cljs.closure$eval2533$fn__2534$G__2524__2541.invoke(closure.clj:299)
at cljs.closure$eval2593$fn__2594.invoke(closure.clj:445)
at cljs.closure$eval2533$fn__2534$G__2524__2541.invoke(closure.clj:299)
at cljsbuild.compiler.SourcePaths$fn__2803.invoke(compiler.clj:44)
at clojure.core$map$fn__4207.invoke(core.clj:2485)
at clojure.lang.LazySeq.sval(LazySeq.java:42)
at clojure.lang.LazySeq.seq(LazySeq.java:60)
at clojure.lang.RT.seq(RT.java:484)
at clojure.core$seq.invoke(core.clj:133)
at clojure.core$apply.invoke(core.clj:617)
at clojure.core$mapcat.doInvoke(core.clj:2514)
at clojure.lang.RestFn.invoke(RestFn.java:423)
at cljsbuild.compiler.SourcePaths._compile(compiler.clj:44)
at cljs.closure$build.invoke(closure.clj:981)
at cljs.closure$build.invoke(closure.clj:951)
at cljsbuild.compiler$compile_cljs$fn__2814.invoke(compiler.clj:58)
at cljsbuild.compiler$compile_cljs.invoke(compiler.clj:57)
at cljsbuild.compiler$run_compiler.invoke(compiler.clj:156)
at user$eval2940$iter__2943__2947$fn__2948.invoke(form-init6210765904056595312.clj:1)
at clojure.lang.LazySeq.sval(LazySeq.java:42)
at clojure.lang.LazySeq.seq(LazySeq.java:60)
at clojure.lang.RT.seq(RT.java:484)
at clojure.core$seq.invoke(core.clj:133)
at clojure.core$dorun.invoke(core.clj:2780)
at clojure.core$doall.invoke(core.clj:2796)
at user$eval2940.invoke(form-init6210765904056595312.clj:1)
at clojure.lang.Compiler.eval(Compiler.java:6619)
at clojure.lang.Compiler.eval(Compiler.java:6609)
at clojure.lang.Compiler.load(Compiler.java:7064)
at clojure.lang.Compiler.loadFile(Compiler.java:7020)
at clojure.main$load_script.invoke(main.clj:294)
at clojure.main$init_opt.invoke(main.clj:299)
at clojure.main$initialize.invoke(main.clj:327)
at clojure.main$null_opt.invoke(main.clj:362)
at clojure.main$main.doInvoke(main.clj:440)
at clojure.lang.RestFn.invoke(RestFn.java:421)
at clojure.lang.Var.invoke(Var.java:419)
at clojure.lang.AFn.applyToHelper(AFn.java:163)
at clojure.lang.Var.applyTo(Var.java:532)
at clojure.main.main(main.java:37)
Subprocess failed

Trevor Wennblom
added a comment - 04/Nov/13 2:37 PM With the patch, after `lein cljsbuild clean` I started to get the following exception.

% lein cljsbuild auto
Compiling ClojureScript.
Compiling "public/main.js" from ["src-cljs"]...
Compiling "public/main.js" failed.
java.lang.IllegalArgumentException: URI is not hierarchical
at java.io.File.<init>(File.java:392)
at cljs.analyzer$source_path.invoke(analyzer.clj:1193)
at cljs.analyzer$forms_seq.invoke(analyzer.clj:1200)
at cljs.analyzer$analyze_file.invoke(analyzer.clj:1228)
at cljs.compiler$parse_ns.invoke(compiler.clj:904)
at cljs.compiler$parse_ns.invoke(compiler.clj:900)
at cljs.compiler$to_target_file.invoke(compiler.clj:990)
at cljs.compiler$compile_root.invoke(compiler.clj:1021)
at cljs.closure$compile_dir.invoke(closure.clj:399)
at cljs.closure$eval2606$fn__2607.invoke(closure.clj:431)
at cljs.closure$eval2533$fn__2534$G__2524__2541.invoke(closure.clj:299)
at cljs.closure$eval2593$fn__2594.invoke(closure.clj:445)
at cljs.closure$eval2533$fn__2534$G__2524__2541.invoke(closure.clj:299)
at cljsbuild.compiler.SourcePaths$fn__2803.invoke(compiler.clj:44)
at clojure.core$map$fn__4207.invoke(core.clj:2485)
at clojure.lang.LazySeq.sval(LazySeq.java:42)
at clojure.lang.LazySeq.seq(LazySeq.java:60)
at clojure.lang.RT.seq(RT.java:484)
at clojure.core$seq.invoke(core.clj:133)
at clojure.core$apply.invoke(core.clj:617)
at clojure.core$mapcat.doInvoke(core.clj:2514)
at clojure.lang.RestFn.invoke(RestFn.java:423)
at cljsbuild.compiler.SourcePaths._compile(compiler.clj:44)
at cljs.closure$build.invoke(closure.clj:981)
at cljs.closure$build.invoke(closure.clj:951)
at cljsbuild.compiler$compile_cljs$fn__2814.invoke(compiler.clj:58)
at cljsbuild.compiler$compile_cljs.invoke(compiler.clj:57)
at cljsbuild.compiler$run_compiler.invoke(compiler.clj:156)
at user$eval2940$iter__2943__2947$fn__2948.invoke(form-init6210765904056595312.clj:1)
at clojure.lang.LazySeq.sval(LazySeq.java:42)
at clojure.lang.LazySeq.seq(LazySeq.java:60)
at clojure.lang.RT.seq(RT.java:484)
at clojure.core$seq.invoke(core.clj:133)
at clojure.core$dorun.invoke(core.clj:2780)
at clojure.core$doall.invoke(core.clj:2796)
at user$eval2940.invoke(form-init6210765904056595312.clj:1)
at clojure.lang.Compiler.eval(Compiler.java:6619)
at clojure.lang.Compiler.eval(Compiler.java:6609)
at clojure.lang.Compiler.load(Compiler.java:7064)
at clojure.lang.Compiler.loadFile(Compiler.java:7020)
at clojure.main$load_script.invoke(main.clj:294)
at clojure.main$init_opt.invoke(main.clj:299)
at clojure.main$initialize.invoke(main.clj:327)
at clojure.main$null_opt.invoke(main.clj:362)
at clojure.main$main.doInvoke(main.clj:440)
at clojure.lang.RestFn.invoke(RestFn.java:421)
at clojure.lang.Var.invoke(Var.java:419)
at clojure.lang.AFn.applyToHelper(AFn.java:163)
at clojure.lang.Var.applyTo(Var.java:532)
at clojure.main.main(main.java:37)
Subprocess failed